HERE ARE THE DETAILS FROM STAPLES:

Take your old binder to a participating Staples and get a $2 off coupon good on your next purchase of a binder at Staples.

In store only. For every binder you recycle in store, get $2 off
the purchase of any new binder, same-day transaction required. Binder to
be recycled must be surrendered. No cash/credit back. Not valid on
prior purchases or purchases made with Staples® Procurement or
Convenience Cards. Binder must be empty of contents.